Welt-beating machine.



M. F. BROGAN.-

WELT BEATING MACHINE. APPLICATION FILED OCT. 23, 1915.

Patentd July 24c, 1917;

2 SHEETSSHEET 1,

M. F. BROGAN.

Patented July 24,1917

'2 S-HEETSSHEET 2.

LQS4,

UT TTlUE.

MICHAEL F. BROGAN, OF LAWRENCE, MASSACHUSETTS, ASSIGNOR T0 UNITED SHOEMACHINERY COMPANY, OF PATEBSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

WELT-BEATING MACHINE.

Specification of Letters Patent.

Patented July 2%, T931117.

To all whom it may concern:

Be it known that 1, MICHAEL F. BROGAN, a citizen of the United States,residing at Lawrence, in the county of Essex and State of Massachusetts,have invented certain new and useful Improvements in VVelt'Beatinglllachincs; and I do hereby declare the following to be a full, clear,and exact description of the im 'ention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to welt beating machines, and more particularlyto welt heating machines of the type in which the welt heating means hasan intermittent gripping engagement with the welt.

\Velt beating machines of the type at present in common use in shoefactories comprise a welt support adapted to enter the crease betweenthe welt and upper of a lasted shoe, so as to support the welt upon itsupper surface, and a welt beating l1ammer which is vibrated with greatrapidity to beat out the welt as the welt is advanced across the uppersurface of the welt support. ln such machines the welt is advanced overthe surface of the welt support between the strokes or blows of thehammer while the hammer is disengaged from the welt. Young orinexperienced operatives are usually employed in shoe factories tooperate these machines, and a great deal of trouble is caused by theoperatives advancing the work so rapidly through the machine that theoperation is not efliciently performed. The operatives of such machinesare apt to slight the work at certain points, particularly along thesides of the shoe, with the result that the welt is not in propercondition when the outsole is applied.

The objects of the present invention are to improve the construction andefliciency of welt beating machines, and to produce a welt beatingmachine of the type having welt heating means having an intermittentgrip ping engagement with the welt in which it will. be impossible forthe operator to advance the welt more rapidly than a predeterminedspeed.

With this object in view, one feature of the invention contemplates theprovision in a welt beating machine in which the welt beating means hasan intermittent gripplng engagement with the welt of means for l1mitingthe speed at which the welt may be fed through the machine.

In the preferred form of the invention the feed limiting means consistsof well: feeding devices which are engaged with the welt before the weltis released by the welt heating means during each cycle of the machine,and act to advance the welt while the welt beating means is disengagedfrom the welt.

Certain parts of the welt which are especially refractory, such as thataround the toe of the shoe, require a more extended beating than therest of the welt, in order to reduce these parts to the proper conditionduring the beating operation. To enable this result to be secured, theinvention contemplates the provision of mechanism for controlling thewelt feeding devices to vary the speed at which the welt is advancedduring the operation of the machine. The mechanism for controlling thewelt feeding devices is preferably under the control of the operator, sothat the speed may be increased or decreased at any desired point in thewelt.

Further features of the invention consist of certain constructions,arrangements and combinations of parts hereinafter described andparticularly pointed out in the claims, the advantages of which will beobvious to one skilled in the art.

The invention will be readily understood from the accompanying drawingsillustrating a machine embodying the invention in its preferred form,and the following de tailed description.

In the drawings,

Figure 1 is a view in side elevation of a welt beating machine embodyingthe invention;

Fig. 2 is a view in front elevation, partly in section, of the machine;and

Fig. 3 is a detail plan view, partly in sec tion, illustratingparticularly the welt feeding devices.

The machine illustrated in the drawings is a, welt beating and slashingmachine, the beating and slashing mechanisms of which have the samegeneral construction and mode of operation as the beating and slashing.mechanisms of the machine illustrated in the patent to Hadaway, No.875,171, December 31, 1907. The machine comprises a an is work supportindicated at 2, the forward end of which is shaped to enter the creasebetween the upper and welt of a lasted shoe to support the welt on itsupper surface. The welt'beating hammer is indicated at 4:, and issecured to the lower end of the hammer rod 6 which is mounted in theforward end or head of a hammer lever 8. Acoiled spring 10 surrounds thehammer rod and engages at its lower end a collar 12 formed 011 the rod,and at its upper end an adjustable sleeve 14 which is threaded into thehead of the hammer lever and held in adjusted position by a lock nut 16.The downward movement of the hammer rod in the hammer lever is limitedby the engagement of a stop collar 18 threaded on the upper end of thehammer rod with the sleeve 14:. t

The hammer lever 8 is mounted to oscillate on a shaft 20 journaled inbearings 22 in the machine frame. The rear end of the hammer lever isformed with spread arms to receive between them an eccentric block 2%embracing an eccentric on the main shaft 26 of the machine. Thisconstruction serves to oscillate the hammer lever 8 rapidly during therotation of the main shaft 26.

The machine is provided with a welt slashing knife 28 which is securedto the for ward end of the reciprocatory slide 30, the rear end of whichis connected with an oscillatory lever 32 pivoted at 3d and providedwith a cam roll 36 engaging the cam groove 38 in a cam disk 40 mountedto turn loosely upon the rearwardly extending shaft 42 fixed in theframe of the machine. The main shaft 26 of the machine carries a wormmeshing with a worm wheel id mounted on the rearwardly extending shaft42 alongside the cam disk 40, and a sliding clutch pin d6 mounted in thecam disk -10 and arranged to be moved into and out of clutchingengagement with the worm wheel ti is provided to connect the cam diskwith the worm wheel at certain times, so that the cam disk may beactuated to operate the welt slashing knife. The action of the clutchpin is controlled by a wedge 4-8 mounted upon the extremity of a leverpivoted on the shaft 52 and normally held in elevated position by atension springfid: to maintain the clutch pin 46 disengaged from theworm wheel 4%. The lever 50 may be depressed to allow the clutch pin tobe actuated by a spring 5% to engage the worm wheel a l and therebyconnect the cam disk with the worn wheel through suitable connectionswith a treadle (not shown).

The feed limiting mechanism of the ma chine illustrated in the drawingscomprises a pair of welt gripping and feeding jaws indicatedrespectively at 58 and 60.' These jaws are arranged to grip the welt ata point immediately in. advance of the welt support, and are mounted formovement in the direction of the line of feed to feed the welt. The

lower jaw 58 is formed at the end of a curved arm 62 secured by means ofa bolt 64 to a dove-tailed slide 66 mounted in a suitable guideway inthe frame of the machine ex- 7 tend substantially parallel with the lineof feed. The upper jaw is formed at the end of a curved arm 68 pivotedto the arm 62 by means of a horizontal pivot pin or bolt 70. The upperor movable jaw 60 of the gripping device is moved relatively to thelower or fixed jaw 58 to grip the 'welt just before the hammer is raisedfrom the welt during each cycle of operaion of the machine. l Vhile thehammer is disengaged from the welt the slide 66 is moved to the left(Fig. 2) or in the direction of feed the jaws of the gripping devicebeing maintained in gripping relation with the welt during this movementof the slide. The advancing movement of the feed jaws while the welt isgripped between them acts to ad vance the welt across the upper surfaceof the welt support 2. lVh'en the hammer has again engaged the welt, theupper jaw of the gripping device is lifted to release the I welt fromthe grip of the jaws, and the slide 66 is then moved back to startingposition. It will be noted that with this mode of operation of thegripping and feeding jaws relae5 tive to the hammer the welt is grippedat all times either between the hammer and the welt support or betweenthe jaws of the gripping device, and that the speed at which the welt isadvanced across the upper sur 199 face of the welt support is entirelycontrolled by the movement of the welt gripping aws. c

The upper jaw 60 of the gripping device is actuated to open and closethe jaws lea through an oscillatory lever '72 pivoted at 7% upon anupwardly extending arm 76 on the frame of the machine, and aonnected atits forward end with. a rearwardly extending arm '78 preferably formedintegral with the 110 arm 88. The rear end of the arm 78 is formed witha cylindrical bearing block 80 which fits in a suitably formed bore orhearing in a block 82 which in turn is slidably fitted. in a recess inthe forward end of the 11s lever 7 2. The block 82 is connected with thebearing block 80 by means of a pin 8% passing through the block '82 andengaging in a slot in the bearing block 80 as shown in Fig. 3. Thisconstruction forms an eiiicient 0011- 12c nection between the lever 72and the arm 78 for, moving the arm from the lever which will permit thefree movement of the arm with the slide 66. The rear end of the lever 72is pivotally connected at 8-6 with a clevis 1125 88 having a bolt 90which extends through the cross piece of a yoke 92. A coiled spring 9%surrounding the bolt 90 is interposed between the yoke 88 and a nut 96threaded 0n the end of the bolt. The yoke 88 is pivot- 13o Lesa-eve allyconnected at 98 with the forwardly eX- tending arm of a cam lever 100pivoted on a reduced portion of the shaft 20, and having a cam roll 102mounted on the end of its rearwardly extending arm which engages in thecam groove 10% in a cam disk 106 mount ed on the main shaft 26. Throughthis mechanism the upper j aw of the gripping device is actuated to openand close the jaws to grip and release the welt. The spring 9% m'ovidesa yielding connection between the cam lever 100 and the movable jaw ofthe gripping device which permits a relative yield between this aw andthe lever after the jaw engages and grips the welt, and enables the awsto grip and hold securely \velts of varying thicknesses.

in the direction of feed while the welt is gripped. between the jaws andis retracted while the aws are open and the welt released, comprises abell crank lever 108 pivoted upon a vertical stud 110 secured in theframe of the machine, the forwardly eXtending arm of which lever isformed with a slot 112 to receive the shank of the bolt 64: by which thearm 62 is secured to the slide 66. The laterally extending arm of thebell crank 108 is connected by a universal joint 1141- with the forwardend of a link 116. The rear end of this link is connected by a universaljoint 118 with a block 120 mounted in an arc-shaped groove 122 in the upwardly extending arm of the bell crank lever 12% pivoted on the shaft126. Oscillatory movements of substantially unvarying amplitudes areimparted to the bell crank lever 124. and through the connectionsdescribed between this bell crank and the bell crank of the slide 66.Oscillatory movements are imparted to the bell crank lever 12%. througha link 128 connected at one end with the rearwardly extending arm of thebell crank lever, and at the other to the shorter arm of a two-armedlever 130 pivoted on the shaft 20 outside of the lever 100. The otherarm of this two-armed lever is provided with a cam roll 132 engaging acam groove 13 1 in the-cam disk 106.

To enable the operator to control the speed at which the welt is fedthrough the machine, so that the degree or extent of the beating actionto which the welt is subjected may be varied at different points in thewelt, a connection is provided between the block 120 and a treadle (notshown) by which the operator may control the position of the block inthe groove 122. In the con struction shown, the block is connected by alink 13% with the arm 136 of a lever pivoted upon the stud 138. Thislever is provided with a second arm 140 to which a treadle is connected.Separate treadles may be provided respectively to control the throwingof the welt slashing mechanism into and out of operation and to controlthe speed at which the welt is fed by the welt feeding devices. The weltof a lasted shoe is ordinarily most refractory at the toe where thestrain upon the outer edge of the welt gives the welt a curved crosssection, and this part of the welt requires a more extended beating thanany other part in order to reduce it to the proper condition. It is,therefore, practically essential to the efficient beating out of thewelt about the toe of the shoe that the speed at which the welt isadvanced across the upper surface of the welt be reduced to a minimumwhen operating on this portion of the welt. The welt slashing mechanismof the machine is ordinarily thrown into operation only when operatingabout the toe, the slashes being formed in the toe portion of the weltto enable the outer edge of the welt to stretch more readily under theaction of the beating mechanism. In the present construction. the weltslashing mechanism and the welt feeding mechanism are connected with asingle treadle, and the connections are so arranged that the treadle maybe actuated to vary the feed between certain limits while the weltslashing mechanism is inactive, but so that when the treadle is actuatedto give a minimum length of feed the welt slashing mechanism is throwninto operation. In the construction shown the arm 140 is formed with alug 14.2 to which is connected the upper end of the treadle rod 14%. Thelever 50 which controls the operation of the welt slashing mechanism isconnected with the arm 1 10 by a link 1 16 pivoted at its upper end tothe lever and having a slot 1&8 at its lower end which receives a pin150 mounted in the end of the arm 1 10. lVith the lever 50 in elevatedposition, as shown in the drawing,

of parts enables the elatent of the beating action to which the welt issubjected to be varied as desired when operating along the 2. A weltbeating machine, having, in

combination, a welt beating hammer, means for operating the hammer, andmeans for limiting the distance which the welt may be fed between theblows of the hammer.

3. A welt beating machine, having, in combination, a welt support, weltbeating means having an intermittent gripping engagement with the welt,and means for limiting the speed at which the welt may be fed throughthe machine comprising laterally movable welt gripping jaws and meansfor determining the lateral movement of. the jaws.

4. A welt beating machine, having, in combination, a welt support, weltbeating means having an intermittent gripping engagement with the welt,means for limiting the speed at which the welt may be fed through themachine comprising laterally movable welt gripping jaws, means foroperating the jaws to grip the welt, and means for moving the jawslaterally to feed the welt. I

5. A welt beating machine, having, in combination, a welt support, weltbeating means having an intermittent. gripping engagement with the welt,and means for limiting the speed at which the welt may be fed throughthe machine, comprising laterally movable welt gripping jawameans foroperating the jaws to grip the welt during each cycle of operationswhile the welt beating means is out of engagement with the welt, and torelease the welt after the welt beating means has engaged the welt, andmeans for limiting the lateral movement of the jaws.

6. A welt beating machine, having, in combination, a welt support, weltbeating means, and means for limiting the speed at which the welt may befed through the machine, comprising laterally movable welt grippingjaws, means for operating the jaws to grip the welt while the weltbeating means is out of engagement with the welt, and to release thewelt after the welt beating means has engaged the welt, and means formoving the jaws laterally 111 meagre combination, a welt support, weltbeating means, devices for feeding the welt, and mechanism under thecontrol of the operator for varying the speed at which the welt is fedby the welt feeding devices during the operation of the machine.

9. A welt beating machine, having, in combination, a welt support, weltheating means, means forslashing the welt, and means for limiting thespeed at which the welt may be fed through the machine.

10. A welt beating machine, having, in combination, a welt support, weltbeating means, means for cutting transverse slashes in the welt, andmeans for feeding the welt.

11. A welt beating machine, having, in

combination, a welt support, welt beating is fed by the welt feedingdevices, mechanism for throwing the welt slashing means into and out ofoperation durlng the continued operation of the machine, and commonmeans for controlling both said mechanisms.

12. A welt beating machine, having, in combination, a welt support, weltbeating means, welt slashing means, devices for feeding the welt,mechanism for producing variations in the speed at which the welt is fedby the welt feeding devices, mechanism for throwing the welt slashingmeans into and out of operation during the continued operation of themachine, and common means under the control of the op erator forcontrolling both said .mechanisms.

13. A welt beating machine, having, in combination, a welt support, weltbeating means, welt slashing means, devices for feeding the welt,mechanism for producing variations in the speed at which the welt is fedby the welt feeding devices, mecha nism for throwing the welt slashingmeans into and outof operation during the Com tinued operation of themachine, and a com ne'ction for causing the welt slashing means to bethrown into operation when the speed means, welt slashing means, devicesfor feeding the welt, mechanism for producing variations in the speed atwhich the welt meagre is fed by the welt feeding devices, mechanism forthrowing the Welt slashing means into and out of operation during thecontinued operation of the machine, and a connection for causing theWelt slashing means to be thrown into operation when the speed at Whichthe Welt is fed is reduced to a predetermined speed.

15. A Welt beating machine, having, in combination, a Welt support, Weltheating means, devices for feeding the Welt, and

mechanism for producing variations in the speed at Which the Welt is fedby the Welt feeding devices during the operation of the machine.

16. A Welt heating machine, having, in combination, a Welt support, Weltheating means having an intermittent gripping engagement With the Weltand means for feeding the Welt relatively to the Welt heating means.

MICHAEL F. BROGAN.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

